♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

✅ 11 pages built successfully
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✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/prismjs/components/prism-awk.js

@@ -1,32 +0,0 @@
-Prism.languages.awk = {
-	'hashbang': {
-		pattern: /^#!.*/,
-		greedy: true,
-		alias: 'comment'
-	},
-	'comment': {
-		pattern: /#.*/,
-		greedy: true
-	},
-	'string': {
-		pattern: /(^|[^\\])"(?:[^\\"\r\n]|\\.)*"/,
-		lookbehind: true,
-		greedy: true
-	},
-	'regex': {
-		pattern: /((?:^|[^\w\s)])\s*)\/(?:[^\/\\\r\n]|\\.)*\//,
-		lookbehind: true,
-		greedy: true
-	},
-
-	'variable': /\$\w+/,
-	'keyword': /\b(?:BEGIN|BEGINFILE|END|ENDFILE|break|case|continue|default|delete|do|else|exit|for|function|getline|if|in|next|nextfile|printf?|return|switch|while)\b|@(?:include|load)\b/,
-
-	'function': /\b[a-z_]\w*(?=\s*\()/i,
-	'number': /\b(?:\d+(?:\.\d+)?(?:e[+-]?\d+)?|0x[a-fA-F0-9]+)\b/,
-
-	'operator': /--|\+\+|!?~|>&|>>|<<|(?:\*\*|[<>!=+\-*/%^])=?|&&|\|[|&]|[?:]/,
-	'punctuation': /[()[\]{},;]/
-};
-
-Prism.languages.gawk = Prism.languages.awk;